Thank you for the quick reply. The first scan is half the letters, and the other is with the stamp, the front of the letter with the address. Sorry that's what I have. The letter was sent to 1.3 and traveled in May.

German empire MI 4,value 1 groshen on the letter
If someone could help me have this letter with a stamp in my possession, I'm not sure of the authenticity. As seen on the scans, it was sent from Altkirch to Mulhouse in 1872.